Over the weekend the 21-year-old former Disney child star shared an intimate snapshot to Instagram of herself and a mystery woman snuggling in bed.
“Sheâ€™s very cute,” Thorne captioned the shot. “First girl I have dated thatâ€™s camera shy.”
The post seemed to hint that her new girlfriend has joined her throuple with Italian boyfriend Benjamin Mascolo, of the Italian pop group Benji & Fede
Thorne, who revealed earlier this year that sheÂ identifies as pansexual has been dating Mascolo since April.
And he was certainly approving of the post, commenting: â€œYou girls are cute.â€, which has since clocked up thousands of likes.
This isnâ€™t the first time that Thorne has been in a polyamorous throuple.
She also dated musician Mod Sun and YouTuber Tana Mongeau at the same time, with both relationships coming to an end earlier this year.
What is a polyamorous throuple?
Urban Dictionary defines aÂ throupleÂ as a â€˜threelationshipâ€™, otherwise known as a relationship with three partners.
Polyamory is defined as â€œthe state or practice of having more than one open romantic relationship at a time.â€
Pansexual is described as being â€œone who can love sexuality in many forms. Like bisexuality, but even more fluid, a pansexual person can love not only the traditional male and female genders, but also transgendered, androgynous, and gender fluid people.â€
Therefore a polyamorous throuple, and in Bella Thorneâ€™s case, a pansexual throuple is a three-way relationships with people of any gender identity.
Unsurprisingly, people sometimes mistake throuple with threesome, but a throuple is a balanced, consensual, and committed relationship between three partners, rather than sex between three people.
Thanks to the recent increase in visibility of the sexual spectrum, the throuple is gaining more and more recognition, as are other forms ofÂ polyamorous relationships.
Speaking onÂ Facebook Watch series, ‘Red Table Talk,Â the 18-year-old daughter of Will Smith and Jada Pinkett-Smith, said she had researched polyamorous relationships after coming across a couple who followed this lifestyle onÂ Instagram.
She said she would be happy to be in a â€œthroupleâ€ relationship with â€œone man and one womanâ€.
Some 4.2% of the UKâ€™s young people (aged between 16 and 24 years old)Â identify as lesbian, gay or bisexual, according to data from the Office of National Statistics. This is a higher proportion than any other age group.
Meanwhile, one study from healthcare company euroClinix foundÂ nearly a fifth of Brits would be open to polyamory.
Bella Thorne isnâ€™t the only celebrity who has opened up about being pansexual.
Earlier this monthÂ plus-size model Tess Holliday revealed she now identifies as pansexual.
The 33-year-old explained in an interview withÂ NYLON magazineÂ that sheâ€™s spent time reflecting on her sexuality and would consider a relationship with a woman, if she wasnâ€™t happily married to husband Nick – who she wed in 2015.
Janelle Monae and Miley Cyrus have both previously admitted to being pansexual.